/**
 * Copyright (C) 2010 Cloudfarming <info@cloudfarming.nl>
 *
 * Licensed under the Eclipse Public License - v 1.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.eclipse.org/legal/epl-v10.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package nl.cloudfarming.client.geoviewer.layers;

import nl.cloudfarming.client.geoviewer.LayerObjectNode;
import nl.cloudfarming.client.geoviewer.Layer;
import nl.cloudfarming.client.geoviewer.LayerObject;
import nl.cloudfarming.client.geoviewer.MapController;
import org.openide.nodes.Children;
import org.openide.nodes.Node;

/**
 *
 * @author Timon Veenstra
 */
public class LayerObjectChildren extends Children.Keys<LayerObject>{

    private final Layer<LayerObject<?>> layer;
    private final MapController mapController;

    public LayerObjectChildren(MapController mapController, Layer<LayerObject<?>> layer) {
        this.layer = layer;
        this.mapController = mapController;
    }


    /**
     * Called when children are first asked for nodes.
     */
    @Override
    @SuppressWarnings("unchecked")
    protected void addNotify() {
        super.addNotify();
        setKeys(layer.getObjects());
    }

    /**
     * Create nodes for a given key (category).
     *
     * @param key Key of category
     * @return
     */
    @Override
    protected Node[] createNodes(LayerObject key) {
        LayerObject<?> layerObject = (LayerObject<?>) key;
        return new Node[]{new LayerObjectNode(mapController, layer, layerObject)};
    }

}
